/Engine/Plugins/Experimental/PCG/Source/PCG/Public/Elements/PCGExecuteBlueprint.h
Calls the IterationLoopBody a fixed number of times, optional parameters are used to potentially initialized the Out Data, but otherwise are used to remove the need to have variables
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, BlueprintPure=false, Category="PCG|Flow Control", Meta=(HideSelfPin="true")) void IterationLoop ( [FPCGContext](API\Plugins\PCG\FPCGContext) & InContext, int64 NumIterations, [UPCGPointData](API\Plugins\PCG\Data\UPCGPointData) *& OutData, const [UPCGSpatialData](API\Plugins\PCG\Data\UPCGSpatialData) * OptionalA, const [UPCGSpatialData](API\Plugins\PCG\Data\UPCGSpatialData) * OptionalB, [UPCGPointData](API\Plugins\PCG\Data\UPCGPointData) * OptionalOutData ) const